<template>
  <div>
    <el-button
      type="primary"
      icon="el-icon-plus"
      style="margin: 10px 0"
      @click="showDialog"
    >添加</el-button>

    <!-- 数据表格 -->
    <el-table style="width: 100%" border :data="list">
      <el-table-column type="index" label="序号" width="80px" align="center" />
      <el-table-column prop="tmName" label="品牌名称" width="width" />
      <el-table-column prop="logoUrl" label="品牌LOGO" width="width">
        <template slot-scope="{ row }">
          <img :src="row.logoUrl" alt="" style="width: 50px; height: 50px">
        </template>
      </el-table-column>
      <el-table-column prop="prop" label="操作" width="width">
        <template slot-scope="{ row }">
          <el-button
            type="warning"
            icon="el-icon-edit"
            size="mini"
            @click="updateTradeMark(row)"
          >修改</el-button>
          <el-button
            type="danger"
            icon="el-icon-delete"
            size="mini"
            @click="deleteTradeMark(row)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页器
			@size-change="handleSizeChange"
      @current-change="handleCurrentChange"
		-->
    <el-pagination
      style="margin-top: 20px; text-align: center"
      :current-page="page"
      :total="total"
      :page-size="limit"
      :pager-count="7"
      :page-sizes="[3, 5, 10]"
      layout=" prev, pager, next, jumper, ->, sizes, total"
      @current-change="getPageList"
      @size-change="handleSizeChange"
    />

    <!-- 对话框 -->
    <el-dialog
      :title="tmForm.id ? '修改品牌' : '添加品牌'"
      :visible.sync="dialogFormVisible"
    >
      <el-form ref="ruleForm" style="width: 80%" :model="tmForm" :rules="rules">
        <el-form-item label="品牌名称" label-width="100px" prop="tmName">
          <el-input v-model="tmForm.tmName" autocomplete="off" />
        </el-form-item>
        <el-form-item label="品牌LOGO" label-width="100px" prop="logoUrl">
          <el-upload
            class="avatar-uploader"
            action="/dev-api/admin/product/fileUpload"
            :show-file-list="false"
            :on-success="handleAvatarSuccess"
            :before-upload="beforeAvatarUpload"
          >
            <img v-if="tmForm.logoUrl" :src="tmForm.logoUrl" class="avatar">
            <i v-else class="el-icon-plus avatar-uploader-icon" />
            <div slot="tip" class="el-upload__tip">只能上传jpg文件，且不超过2mb</div>
          </el-upload>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="addOrUpdateTradeMark">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'TradeMark',
  data() {
    // 自定义校验规则
    const validateTmName = (rule, value, callback) => {
      if (value.length < 2 || value.length > 10) {
        callback(new Error('长度只能为2~10个字符'))
      } else {
        callback()
      }
    }
    return {
      // 当前页
      page: 1,
      // 每页数量
      limit: 5,
      // 总数量
      total: 0,
      // 表格数据
      list: [],
      // 对话框是否显示
      dialogFormVisible: false,
      // 收集品牌信息
      tmForm: {
        tmName: '',
        logoUrl: ''
      },
      rules: {
        tmName: [
          { required: true, message: '请输入品牌名称', trigger: 'blur' },
          // { min: 2, max: 10, message: '长度只能为2~10个字符', trigger: 'change' }
          // 使用自定义校验规则
          { validator: validateTmName, trigger: 'change' }
        ],
        logoUrl: [{ required: true, message: '请选择品牌图片' }]
      }
    }
  },
  mounted() {
    this.getPageList()
  },
  methods: {
    /**
     * 获取品牌列表数据
     */
    async getPageList(pager = 1) {
      this.page = pager
      const { page, limit } = this
      const result = await this.$API.trademark.reqTradeMarkList(page, limit)
      if (result.code == 200) {
        this.total = result.data.total
        this.list = result.data.records
      }
    },
    /**
     * 更换每页展示条数
     */
    handleSizeChange(limit) {
      this.limit = limit
      this.getPageList()
    },
    // 点击添加品牌按钮
    showDialog() {
      this.dialogFormVisible = true
      this.tmForm = { tmName: '', logoUrl: '' }
    },
    // 点击修改品牌按钮
    updateTradeMark(row) {
      this.dialogFormVisible = true
      this.tmForm = { ...row }
    },
    // 图片上传成功
    handleAvatarSuccess(res, file) {
      this.tmForm.logoUrl = res.data
    },
    // 图片上传之前
    beforeAvatarUpload(file) {
      const isJPG = file.type === 'image/jpeg'
      const isPNG = file.type === 'image/png'
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG && !isPNG) {
        this.$message.error('上传头像图片只能是 JPG/PNG 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!')
      }
      return (isJPG || isPNG) && isLt2M
    },
    // 确定按钮（添加品牌|修改品牌）
    addOrUpdateTradeMark() {
      this.$refs.ruleForm.validate(async(valid) => {
        if (valid) {
          // 校验通过
          this.dialogFormVisible = false
          const result = await this.$API.trademark.reqAddOrUpdateTradeMark(this.tmForm)
          if (result.code == 200) {
            this.$message({
              message: this.tmForm.id ? '修改品牌成功' : '添加品牌成功',
              type: 'success'
            })
            // 重新获取品牌列表数据
            this.getPageList(this.tmForm.id ? this.page : 1)
          }
        } else {
          // 校验未通过
          this.$message({
            message: '请填写符合要求的内容！',
            type: 'warning'
          })
          return false
        }
      })
    },
    // 删除品牌
    deleteTradeMark(row) {
      // 弹框
      this.$confirm(`确定删除${row.tmName}?`, '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(async() => {
          // 确认
          const result = await this.$API.trademark.reqDeleteTradeMark(row.id)
          if (result.code == 200) {
            // 删除成功
            this.$message({
              type: 'success',
              message: '删除成功!'
            })
            this.getPageList(this.list.length > 1 ? this.page : this.page - 1)
          }
        })
        .catch(() => {
          // 取消
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        })
    }
  }
}
</script>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>
